Known as thermal bypass, air movement across, within and behind insulation increases
heat loss, causes discomfort and enables mould growth.

Discover how this unregulated, little known phenomenon has the potential to cause:

• 10x more heat loss than predicted (leading to larger bills and CO2 emissions)
• drafts and thermal discomfort
• mould growth
• burst pipes and leaks
• fire and smoke risks

About this Workshop

Join author Mark Siddall for a live online workshop which explores how you can avoid
various types of uncontrolled air movement and arm yourself with the correct knowledge
and skills so that you can avoid failures in design and construction, reduce risks and
liabilities, and deliver buildings that perform as predicted.

This workshop will explore how thermal bypass risks can be addressed, and performance
gaps avoided, by adopting good design and construction practices. In the workshop Mark,
Principal at Mark Siddall Consulting, will:

• review existing knowledge and understanding about the impact of thermal bypass,
• showcase practical examples of best practice, and
• give you the chance to hone your skills so that you can eliminate thermal bypass risks

Come Prepared

It is recommended that attendees review the Thermal Bypass paper before attending the
event so that they have the opportunity to become more informed before the event and
ask better/more nuanced questions on the day and get the most out of the experience.

Programme

11:00 Introduction
11:05 Thermal Bypass Presentation 
12:30 Q&A
12:40 Break
12:50 Details Workshop
13:15 Final Q&A / Review
13:30 Close

About the Speaker

Mark Siddall

An award-winning Passivhaus architect with over 35 years experience in the construction industry, Mark Siddall is one of the pioneers that brought Passivhaus to the U.K. Through his architectural practice LEAP, Mark and his team help self-builders, homeowners and communities by designing new homes and retrofits which are sensitive to the local area and reflect a high standard of architecture.

With a keen interest in building performance issues of usability and practicality inform his approach and have increasingly led to an appreciation of the need for an integrated design process. Mark is a technical advisor to the Passivhaus Trust, has delivered lectures and training in the USA, New Zealand, Germany and the UK and contributed to peer reviewed research.

You can learn more about Mark's work on his website, the LEAP website, as well as on X and Instagram.